TC74LVX244FTFTELM

TC74LVX240,244F/FT TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74LVX240F, TC74LVX240FT TC74LVX244F, TC74LVX244FT Octal Bus Buffer TC74LVX240 Inverted, 3-State Outputs TC74LVX244 Non-Inverted, 3-State Outputs The TC74LVX240,244F/ FT is a high-speed CMOS OCTAL BUS BUFFER fabricated using silicon gate CMOS technology. Designed for use in 3-V systems, it achieves high-speed operation while maintaining the CMOS low power dissipation. This device is suitable for low-voltage and battery operated systems. The TC74LVX240 is an inverting 3-state buffer while the TC74LVX244 is non-inverting. Both devices have two active-low output enables. These devices are designed to be used in such applications as 3-state memory address drivers. An input protection circuit ensures that 0 to 5.5V can be applied to the input pins without regard to the supply voltage. This device can be used to interface 5V to 3V systems and two supply systems such as battery back up. This circuit prevents device destruction due to mismatched supply and input voltages. Features • High-speed: tpd = 4.7 ns (typ.) (VCC = 3.3 V) • Low power dissipation: ICC = 4 μA (max) (Ta = 25°C) • Input voltage level: VIL = 0.8 V (max) (VCC = 3 V) TC74LVX240F, TC74LVX244F TC74LVX240FT, TC74LVX244FT Weight SOP20-P-300-1.27A TSSOP20-P-0044-0.65A : 0.22 g (typ.) : 0.08 g (typ.) VIH = 2.0 V (min) (VCC = 3 V) • • Power-down protection provided on all inputs Balanced propagation delays: tpLH ∼ − tpHL • Low niose: VOLP = 0.8 V (max) • Pin and function compatible with 74HC240/244 Start of commercial production 1993-01 1 2014-03-01 TC74LVX240,244F/FT Pin Assignment (top view) TC74LVX240 TC74LVX244 1G 1 20 VCC 1G 1 20 VCC 1A1 2 19 2G 1A1 2 19 2G 2Y 4 3 18 1Y1 2Y4 3 18 1Y1 1A2 4 17 2A4 1A2 4 17 2A4 2Y3 5 16 1Y 2 2Y3 5 16 1Y2 1A3 6 15 2A3 1A3 6 15 2A3 2Y2 7 14 1Y 3 2Y2 7 14 1Y3 1A4 8 13 2A2 1A4 8 13 2A2 2 Y1 9 12 1Y 4 2Y1 9 12 1Y4 GND 10 11 2A1 GND 10 11 2A1 IEC Logic Symbol 1G 1A1 1A2 1A3 1A4 2G 2A1 2A2 2A3 2A4 (1) TC74LVX240 EN 1G (2) (4) (6) (18) (16) (14) (12) (8) (19) 1Y1 1Y 2 1A1 1A2 1Y 3 1Y 4 1A3 1A4 EN 2G (11) (13) (15) (17) (9) (7) (5) (3) 2A1 2A2 2A3 2A4 2 Y1 2Y2 2Y3 2Y 4 (1) TC74LVX244 EN (2) (4) (6) (18) (16) (14) (12) (8) (19) (11) (13) (15) (17) 1Y1 1Y2 1Y3 1Y4 EN (9) (7) (5) (3) 2Y1 2Y2 2Y3 2Y4 Truth Table Inputs Outputs G An Yn (244) Y n ( 240 ) L L L H L H H L H X Z Z X: Don’t care Z: High impedance 2 2014-03-01 TC74LVX240,244F/FT Absolute Maximum Ratings (Note) Characteristics Symbol Rating Unit Supply voltage range VCC −0.5 to 7.0 V DC input voltage VIN −0.5 to 7.0 V VOUT −0.5 to VCC + 0.5 V Input diode current IIK −20 mA Output diode current IOK ±20 mA DC output current IOUT ±25 mA DC VCC/ground current ICC ±75 mA Power dissipation PD 180 mW Storage temperature Tstg −65 to 150 °C DC output voltage Note: Exceeding any of the absolute maximum ratings, even briefly, lead to deterioration in IC performance or even destruction. Using continuously under heavy loads (e.g. the application of high temperature/current/voltage and the significant change in temperature, etc.) may cause this product to decrease in the reliability significantly even if the operating conditions (i.e. operating temperature/current/voltage, etc.) are within the absolute maximum ratings and the operating ranges. Please design the appropriate reliability upon reviewing the Toshiba Semiconductor Reliability Handbook (“Handling Precautions”/“Derating Concept and Methods”) and individual reliability data (i.e. reliability test report and estimated failure rate, etc). Operating Ranges (Note) Characteristics Symbol Rating Unit Supply voltage VCC 2.0 to 3.6 V Input voltage VIN 0 to 5.5 V VOUT 0 to VCC V Operating temperature Topr −40 to 85 °C Input rise and fall time dt/dv 0 to 100 ns/V Output voltage Note: The operating ranges must be maintained to ensure the normal operation of the device. Unused inputs must be tied to either VCC or GND. 3 2014-03-01 TC74LVX240,244F/FT Electrical Characteristics DC Characteristics Characteristics H-level Symbol VIH ⎯ Input voltage L-level H-level VIL VOH Output voltage ⎯ IOH = −50 μA VIN = VIH IOH = −50 μA or VIL IOH = −4 mA IOL = 50 μA L-level VOL Ta = −40 to 85°C Ta = 25°C Test Condition VIN = VIH IOL = 50 μA or VIL IOL = 4 mA VCC (V) Min Typ. Max Min Max 2.0 1.5 ⎯ ⎯ 1.5 ⎯ 3.0 2.0 ⎯ ⎯ 2.0 ⎯ 3.6 2.4 ⎯ ⎯ 2.4 ⎯ 2.0 ⎯ ⎯ 0.5 ⎯ 0.5 3.0 ⎯ ⎯ 0.8 ⎯ 0.8 3.6 ⎯ ⎯ 0.8 ⎯ 0.8 2.0 1.9 2.0 ⎯ 1.9 ⎯ 3.0 2.9 3.0 ⎯ 2.9 ⎯ 3.0 2.58 ⎯ ⎯ 2.48 ⎯ 2.0 ⎯ 0 0.1 ⎯ 0.1 3.0 ⎯ 0 0.1 ⎯ 0.1 3.0 ⎯ ⎯ 0.36 ⎯ 0.44 Unit V V 3-State output Off-state current IOZ VIN = VIH or VIL VOUT = VCC or GND 3.6 ⎯ ⎯ ±0.25 ⎯ ±2.5 μA Input leakage current IIN VIN = 5.5 V or GND 3.6 ⎯ ⎯ ±0.1 ⎯ ±1.0 μA Quiescent supply current ICC VIN = VCC or GND 3.6 ⎯ ⎯ 4.0 ⎯ 40.0 μA 4 2014-03-01 TC74LVX240,244F/FT AC Characteristics (input: tr = tf = 3 ns) Characteristics Symbol VCC (V) Propagation delay time (TC74LVX240) Propagation delay time (TC74LVX244) Min Typ. Max Min Max 15 ⎯ 5.7 10.1 1.0 12.5 50 ⎯ 8.2 13.6 1.0 16.0 15 ⎯ 4.3 6.2 1.0 7.5 50 ⎯ 6.8 9.7 1.0 11.0 15 ⎯ 6.1 11.4 1.0 13.5 50 ⎯ 8.6 14.9 1.0 17.0 15 ⎯ 4.7 7.1 1.0 8.5 50 ⎯ 7.2 10.6 1.0 12.0 15 ⎯ 7.1 13.8 1.0 16.5 50 ⎯ 9.6 17.3 1.0 20.0 15 ⎯ 5.5 8.8 1.0 10.5 50 ⎯ 8.0 12.3 1.0 14.0 2.7 50 ⎯ 11.6 16.0 1.0 19.0 3.3 ± 0.3 50 ⎯ 9.7 11.4 1.0 13.0 2.7 50 ⎯ ⎯ 1.5 ⎯ 1.5 3.3 ± 0.3 50 ⎯ ⎯ 1.5 ⎯ 1.5 (Note 2) ⎯ 4 10 ⎯ 10 pF ⎯ 6 ⎯ ⎯ ⎯ pF TC74LVX240 ⎯ 17 ⎯ ⎯ ⎯ TC74LVX244 ⎯ 19 ⎯ ⎯ ⎯ 2.7 ⎯ tpHL 3.3 ± 0.3 tpLH 2.7 ⎯ tpHL 3.3 ± 0.3 tpZL 2.7 RL = 1 kΩ 3.3 ± 0.3 tpZH Output disable time Output to output skew Input capacitance Output capacitance Power dissipation capacitance (Note 3) tpLZ tpHZ RL = 1 kΩ tosLH (Note 1) tosHL CIN ⎯ COUT CPD Unit CL (pF) tpLH Output enable time Ta = −40 to 85°C Ta = 25°C Test Condition ns ns ns ns ns pF Note 1: Parameter guaranteed by design. (tosLH = |tpLHm − tpLHn|, tosHL = |tpHLm − tpHLn|) Note 2: Parameter guaranteed by design. Note 3: CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption. Average operating current can be obtained by the equation: ICC (opr) = CPD･VCC･fIN + ICC/8 (per bit) 5 2014-03-01 TC74LVX240,244F/FT Noise Characteristics (Ta = 25°C, input: tr = tf = 3 ns, CL = 50 pF) Characteristics Typ. Limit Unit 3.3 0.5 0.8 V ⎯ 3.3 −0.5 −0.8 V VIHD ⎯ 3.3 ⎯ 2.0 V VILD ⎯ 3.3 ⎯ 0.8 V Symbol Test Condition Quiet output maximum dynamic VOL VOLP ⎯ Quiet output minimum dynamic VOL VOLV Minimum high level dynamic input voltage VIH Maximum low level dynamic input voltage VIL VCC (V) Input Equivalent Circuit INPUT 6 2014-03-01 TC74LVX240,244F/FT Package Dimensions Weight: 0.22 g (typ.) 7 2014-03-01 TC74LVX240,244F/FT Package Dimensions Weight: 0.08 g (typ.) 8 2014-03-01 TC74LVX240,244F/FT RESTRICTIONS ON PRODUCT USE • Toshiba Corporation, and its subsidiaries and affiliates (collectively "TOSHIBA"), reserve the right to make changes to the information in this document, and related hardware, software and systems (collectively "Product") without notice. • This document and any information herein may not be reproduced without prior written permission from TOSHIBA. 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